Mixing-valve.



M. SCHNAIER.

MIXING VALVE.

APPLICATION FILED APR. 6, 19m.

Patented Dec. 26, 1916.

3110mm foz filly/f0 5179/10/81" To all whom it may concern:

UNITED STATES PATENT OFFICE.

mrLroN soHNAmn, on NEW YORK, N.'Y., ASSIGNOB 'ro nrrL'roN scnNAInn ooNrnac'r- 0032., A CORPORATION. OF NEW YORK.

, MIXDIG-VALVIE.

' Specification of Letters Patent.

Patented Dec. 2c, 1916.

Application filed April 6, 1914. Serial No. 829,874.

Be it known that I, MILTON SoHNAmR, a citizen of the United States, residing at the city of New York, borough of Manhattan, in the county and State of New York, have invented certain new and useful Improvements in Mixing-Valves, of which the fol-. lowing is afull, clear and exact specification.

My invention relates to improvements in of fluids, and

means for controlling the flow thesame has for its object more particularly to provide a simple, eflicient and reliable valve for shower baths and other apparatus by means of which the. quantities of the several fluids entering said valve may be positively controlled or regulated in order properly to mix the same.

Further, said invention has for its object, to provide a valve for positively and uniformly mixing fluids which may be received from sources of supply, maintained 'or stored at difierent levels, or under different pressures.

- -Further, said invention has for its object, to provide a valve for use in connection- 4 with shower baths, bath tubs or other appahereinafter more fully pointed outin the claims.

ratus or fixtures by means of which hot and cold water received from common sources of supply may beupositively controlled in order to insure a d i y proportioned mixture thereof at each and everyvalve regardless of its position relative to such sources of watersupply,

To the attainment of the aforesaid objects and ends my invention consists in the novel detailso constructiomand in the combination, connection and arrangement of parts In the accompanying drawings, wherein like numerals of reference indicate like re a side view, partlyin section Fig. 2' is a transverse section taken on theiine 212 of Fig. 1; Fig. 3 is an enlarged detail longitudinal sectional view of one of the inlet portions of the .valve and the regulating means arranged-therein, and Fig. 4 is a transverse section thereof taken on the line 4-4 of said Fig. 3.

described and then tical grooves 26, 26,

Insaid drawings 10 designates a mixing valve comprising a casing 11 forming a mixing chamber which for convenience is shown as of circular outline. At the left hand side of said casing is provided an inlet nipple 12 which is connected by a pipe 12 with a source. of hot water supply, and at the opposite side of said casing is provided an inlet nipple 13 which is connected by a pipe 13 with a source of cold water supply. Within said casing 11 is centrallyarrang a cylindrical casing portion or member 14 which is open at its top and forms a valve seat 15 at its upperedge. The lower portion of said cylindrical member 14' has its inner diameter constructed to form an inlet portion 16 communicating, through an opening 17, with an inlet compartment 18 extending from the hot water inlet nipple 12. The opposite side of said cylindrical member 14 is provided adjacent to its upper edge with an opening 19 communicating with an inlet compartment 20 extending from the cold water inlet nipple 13.

Within the cylindrical member 14 works a valve member in the 'form' of a piston or plug 21 having a reduced lower end 22,;

upon the under side of which is disposed a washer 23 secured in place thereon by a screvv'23 having a tapering or conical head. The under side of said plug and the washer 23 thereon is adapted toseat upon the valve seat 24 provided at the upper edge of the re duced portion of said cylindrical member 14, in order to control the admission of hot water to the casing 11. The body portion of said valve or plug 21 fits snugly within the cylindrical member 14 but is free to move. vertically therein, and is provided at its upper end with a head 25 adapted to seat upon the u per end of said cylindrical mem ber 14. T 0 body portion of said valve or plug 21 is provided with a plurality of verwhich permit of thehot water admitted at the base of said cylindrical member 14 to pass by said valve when the lower end thereof and said was'hen23- are raised from the seat 24' and permit the 10.0

fluid to pass out of the upper'end of said cy= 'lindrical member 14 and into the outencasing 11. The underside of the head 25 may packing or gasand through a stuffing box 28, and is pro vided with an 0 crating handle 29 and a pointer 30 to indlcate upon a face plate 31 the extent to which the valve has been opened. Any suitable means may be provided for preventing the valve rotating as it is raised or lowered.

32 denotes an outlet nipple communicating with the interior of the outer casing 11, and having its outer end connected with a pipe, not shown, extending to the bath fixture, faucet or other device through which the fluid is to be finally discharged.

In order to insure the proper mixing of hot and cold water within each mixing valve, I provide each of the inlet nipples 12, 13 with a longitudinally movable regulating member 33 which is open at its entrance end and closed at its opposite end, and provided in its side adjacent to its closed inner end with a plurality of apertures 34, 34. i The said movable member 33 is provided at its outer end with a series of annular ribs 35 forming a rack which is engaged at one side by a pinion 36 vertically supported in an 0 -set portion or housing 37 provided at the side of the nipple. The upper end of the pinion 36 is provided with a slot 38 to receive the end of a screw driver or other suitable tool whereby said pinion may be rotated and the movable member 33 moved inward or outward to uncover more or less of the apertures 34, 34 therein, and thus positively and definitely control the volume of water permitted to enter the casing 11 through the nipple within which said member 33 is disposed.

In order to prevent any leakage of water past the pinion 36, and to protect the same,

,the ,upper end of each oifset portion or housing 37, above the upper'end of the pin ion 36 therein, is screw-threaded to receive a cap screw or plug 39 provided with a washer 40.

In order to limit the inwardmovement of the regulating members 33, 33 the same may be provided with stops 41, 41.

The operation of the valve generally will be understood fromithe foregoing. In order I to properly control themixture of hot and cold water wherethe pressures thereof at the entrance to the'casing 11 are not the same, it merely becomes necessary to re- .move the screwcaps or plugs 39,39 and rotate the pinions 36, 36, whereby the regulating members 33, 33 may be moved inward or outward to the: required extent to uncover enough of the apertures 34, 34 to in sure the passage of the proper volume of water accordingto the pressure thereof.

' in said inlet It will be observed that by means of my invention I am enabled to insure the admispose.

Having thus described my said invention, what I claim and desire to secure by Letters Patent is 1. A valve comprising a casin provided with an inlet passage and an out et, a valve member within said casing to control the flow of fluid from said inlet passage through said casing to said outlet, a hol ow longitudinally-movable regulating member disposed within said passage, said regulating member having a closed inner end and having openings in its side adjacent said closed end, said regulating member being provided adjacent its outer end with a plurality of circumferential annular ribs forming a rack, and a pinion rotatably mounted upon said casing and engaging said rack whereby said regulating member may be moved back and flow of fluid from said inlet passage through .said casing tosaid outlet, a longitudinallymovable-regulating member disposed withassage to control the volume of fluid admitted therethrough, said regulating member being provided adjacent its,

outer end with a plurality of circumferential annular ribs forming a rack, and a toothed" member rotatably mounted upon said casing and engaging said rack whereby said regus lating member may be moved back and forth within said inlet passage, substantially as specified.

3. .A valve comprising a. casing provided with a plurality of inlet passages and an outlet, a valve member within said casing to control the flow of fluid from said inlet passages through said casing to said outlet, each of said inlet passages having disposed therein a regulating member to control the volume of fluid admitted therethrough, and independent means operatively connected to each of said regulating members for poscounty and State of New York,' this 31st itively actuating the same, whereby the day of March, one thousand nine hundred volumes of fluid admitted to the casing and fourteen.

throu h said inlet passages may be con- MILTON SCHNAIER. trolle to insure a proper mixture thereof, Witnesses: substantially as specified. CONRAD A. DmTnmcH',

Signed at the city of New York; in the Josnrn G. QUINN, Jr. 

